EP3139232A1 - Appareil de création de programme d'usinage pour machine d'électroérosion par fil - Google Patents

Appareil de création de programme d'usinage pour machine d'électroérosion par fil Download PDF

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Publication number
EP3139232A1
EP3139232A1 EP16185218.1A EP16185218A EP3139232A1 EP 3139232 A1 EP3139232 A1 EP 3139232A1 EP 16185218 A EP16185218 A EP 16185218A EP 3139232 A1 EP3139232 A1 EP 3139232A1
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Prior art keywords
machining
shape
machining path
machined
path
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EP16185218.1A
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German (de)
English (en)
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EP3139232B1 (fr
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Masanobu Takemoto
Kaoru Hiraga
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Fanuc Corp
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Fanuc Corp
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/19—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
    • B23H7/02—Wire-cutting
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0426—Programming the control sequence
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H1/00—Electrical discharge machining, i.e. removing metal with a series of rapidly recurring electrical discharges between an electrode and a workpiece in the presence of a fluid dielectric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H11/00—Auxiliary apparatus or details, not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
    • B23H7/02—Wire-cutting
    • B23H7/06—Control of the travel curve of the relative movement between electrode and workpiece
    • B23H7/065—Electric circuits specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
    • B23H7/14—Electric circuits specially adapted therefor, e.g. power supply
    • B23H7/20—Electric circuits specially adapted therefor, e.g. power supply for programme-control, e.g. adaptive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
    • B23Q15/20—Automatic control or regulation of feed movement, cutting velocity or position of tool or work before or after the tool acts upon the workpiece
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/402—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control arrangements for positioning, e.g. centring a tool relative to a hole in the workpiece, additional detection means to correct position
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/4093—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by part programming, e.g. entry of geometrical information as taken from a technical drawing, combining this with machining and material information to obtain control information, named part programme, for the NC machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H2500/00—Holding and positioning of tool electrodes
    • B23H2500/20—Methods or devices for detecting wire or workpiece position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
    • B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
    • B23H7/02—Wire-cutting
    • B23H7/06—Control of the travel curve of the relative movement between electrode and workpiece
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/45—Nc applications
    • G05B2219/45221—Edm, electrical discharge machining, electroerosion, ecm, chemical
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Definitions

  • the present invention relates to a machining program creation apparatus for a wire electrical discharge machine (EDM).
  • EDM wire electrical discharge machine
  • Japanese Patent Application Laid-Open No. 2015-123537 discloses a machining path generator for keyway cutting for a wire electrical discharge machine.
  • a machining program creation apparatus for a wire electrical discharge machine a machining shape and a machining position are designated in order to generate a machining path.
  • a keyway width and a keyway depth are designated as a machining shape
  • the diameter of a circular hole already formed in an object to be machined and center coordinates of the circular hole are designated as a machining position.
  • An operator generates a machining path using this machining program creation apparatus.
  • the machining path drawing device draws figures such as a straight line and a circular arc in accordance with the machining path.
  • the machining path drawing device makes a drawing in accordance with the machining path, and therefore does not draw figures not included in the machining path such as a figure of the circular hole already formed in the object to be machined.
  • the operator After checked the machining path using the machining path drawing device, the operator sets an NC program corresponding to the machining path in the wire electrical discharge machine, and then starts a machining operation to machine the object to be machined.
  • Fig. 1 shows one example of an input screen of a machining path generator for keyway cutting in a wire electrical discharge machine.
  • NC program for keyway cutting such as shown in Fig. 2A is generated.
  • Fig. 3 shows an example in which the machining path (NC program) in Fig. 2A is drawn. The operator checks whether or not the machining path is correct with reference to figures drawn on the screen.
  • the operator After checked the machining path, the operator sets the NC program checked through the drawing in the wire electrical discharge machine, and starts a machining operation to machine the object to be machined. As described previously, the operator confirms the machining path through the drawn figures. However, in the drawing shown in Fig. 3 , the operator can check a machining shape 40 of the keyway, but cannot check where the keyway is machined in the circular hole of the object to be machined. If, for example, a figure (figure 41 of the circular hole of the object to be machined) such as shown in Fig. 4 is drawn, the operator can confirm the machining shape and the machining position of the keyway with respect to the circular hole.
  • a machining path drawing device is adapted to draw figures as specified by a machining path (NC program) on a screen of a display device thereof, and cannot draw a figure not included in the machining path (NC program).
  • NC program machining path
  • Fig. 4 since the figure of the circular hole of the object to be machined, which is not a machining path, cannot be drawn, the positional relationship between the circular hole already formed in the object to be machined and the keyway shape cannot be confirmed by drawing. Specifically, the positional relationship between the already formed circular hole and the keyway cannot be confirmed in a drawing on the display screen of the display device provided in the machining path drawing device.
  • an object of the present invention is to solve the above-described problem of the prior art technique, by providing a machining program creation apparatus having a function for drawing a shape of an object to be machined as well as a machining path.
  • the present invention is characterized in that a dummy machining path for drawing a shape of an object to be machined is generated using a generic machining path drawing device for drawing a machining path to draw the shape of the object to be machined which is not an actual machining path.
  • a machining path for cutting the defined machining shape is generated (first machining path generator).
  • second machining path generator a machining path corresponding to the shape of the object to be machined is generated (second machining path generator).
  • the machining paths generated by the first and second machining path generators are drawn using a machining path drawing device. Since the shape of the object to be machined is also generated as a machining path as well as the machining path for the machining shape, even a generic machining path drawing device can draw both machining paths without discrimination. As a result, the machining shape and the shape of the object to be machined are to be drawn in thus drawn figure drawn, and the machining position of the machining shape can be confirmed.
  • the machining path corresponding to the shape of the object to be machined is designed to work only in a machining path drawing device and have no effect on a machining operation. Accordingly, there is no chance to cut or machine a path corresponding to the shape of the object to be machined.
  • a machining program creation apparatus for a wire electrical discharge machine is configured to create a machining program for cutting a predetermined machining shape in an object to be machined.
  • This machining program creation apparatus includes a machining shape definition unit defining the machining shape; a workpiece shape definition unit defining a shape of the object to be machined; a machining reference position designation unit designating a reference position to be used when the machining shape is machined; a first machining path generation unit for generating a first machining path for cutting the machining shape based on the machining shape, the shape of the object to be machined, and the machining reference position; a second machining path generation unit for generating the shape of the object to be machined as a second machining path based on the shape of the object to be machined and the machining reference position; and a machining path drawing unit for drawing the first and second machining paths.
  • the machining path drawing unit draws the first machining path and the second machining path on a same screen.
  • a machining program creation apparatus for a wire electrical discharge machine is configured to create a machining program for cutting a keyway in a side surface of a circular hole.
  • This machining program creation apparatus includes a machining shape definition unit defining a shape of the keyway; a workpiece shape definition unit designating a diameter of the circular hole; a machining reference position designation unit designating a center position of the circular hole; a first machining path generation unit for generating a first machining path for cutting the keyway based on the shape of the keyway, the diameter of the circular hole, and the center position of the circular hole; a second machining path generation unit for generating the shape of the circular hole as a second machining path based on the diameter of the circular hole and the center position of the circular hole; and a machining path drawing unit for drawing the first and second machining paths.
  • the machining path drawing unit draws the first machining path and the second machining path on a same screen.
  • the second machining path is a machining path for drawing. Moreover, the first machining path and the second machining path may be drawn in different ways of displaying.
  • a machining program creation apparatus which has a function that draws a shape of an object to be machined as well as a machining path.
  • Fig. 5 is a schematic diagram of a numerical controller mounted on a wire electrical discharge machine.
  • the numerical controller 10 includes a processor (CPU) 11, a display/keyboard 12, a RAM 13, an SRAM 14, and a storage 15.
  • a machining path generator is installed on a numerical controller 10 mounted on the wire electrical discharge machine.
  • the machining path generator generates a machining program for keyway cutting based on data inputted through the display/keyboard 12.
  • Data keyway width, keyway depth, chamfer
  • data hole diameter
  • data center coordinates
  • a machining reference position designation unit which are inputted through the display/keyboard 12 are stored in the storage 15 or the SRAM 14.
  • the machining path generator (software for generating a machining path) is registered on the storage 15 and, after the numerical controller 10 is turned on, copied to the RAM 13 to be executed using the CPU 11.
  • NC program The generated machining path (NC program) is stored in the storage 15 or the SRAM 14.
  • the CPU 11 analyzes the NC program and displays the machining path on a display of the display/keyboard 12.
  • the CPU 11 analyzes the NC program and issues commands to a discharger 16, a servo motor 17, and a machining fluid pump 18.
  • the discharger 16, the servo motor 17, and the machining fluid pump 18 operate based on the commands, and the wire electrical discharge machine moves a discharging wire with ejecting machining fluid to machine an object to be machined.
  • Fig. 1 shows a screen used for generating a machining path for keyway cutting in the numerical controller 10.
  • a program creation button 35 is pressed, a machining path (NC program) is generated.
  • NC program machining path
  • a figure of the machining path such as shown in Fig. 4 is displayed.
  • reference numeral 30 denotes an input box for keyway width (b)
  • reference numeral 31 denotes an input box for keyway depth (t)
  • reference numeral 32 denotes an input box for chamfer (c)
  • reference numeral 33 denotes an input box for hole diameter (d)
  • reference numeral 34 denotes input boxes for center coordinates (x, y).
  • a workpiece 36 with a hole 37 is also displayed with a keyway 38 provided therein. It should be noted that a shape of the workpiece 36 is merely an image displayed in any appropriate scale and the like.
  • an operator inputs "keyway width (b)” and “keyway depth (t)” on the screen of the machining path generator as shown in Fig. 1 in order to designate a keyway shape.
  • "chamfer (c)” is also inputted.
  • hole diameter (d) is inputted in order to designate the shape of an object to be machined.
  • the object to be machined is thus described a workpiece having a circular hole formed therethrough, and the keyway shape is adapted to be machined in the circular hole.
  • NC program machining path
  • a machining path generation unit 1 acquires all data inputted through the screen such as the data (keyway depth, keyway width, chamfer) in the machining shape definition unit, the data (hole diameter) in the workpiece shape definition unit, and the data (hole center coordinates) in the machining reference position designation unit. Based on the acquired data, a machining path (NC program) for keyway cutting such as shown in Fig. 2A is generated.
  • a machining path generation unit 2 acquires data (hole diameter) in the workpiece shape definition unit and data (hole center coordinates) in the machining reference position designation unit. These data had already been inputted through the screen. Based on the acquired data, a machining path (NC program) such as shown in Fig. 2B is generated which corresponds to the circular hole of the object to be machined. When the generation of the machining paths (NC programs) is finished, the operator selects a main program such as shown in Fig. 2C and performs drawing. This main program may be created by the machining path generation unit 1 or 2 when the program creation button is pressed, or may be prepared on the storage 15 or the SRAM 14 in advance.
  • the numerical controller 10 assigns -1 to the macro variable #3010.
  • the machining path drawing device analyzes the selected main program and draws a machining path.
  • Drawing a first machining path and a second machining path in different ways of displaying helps the operator to discriminate between the first machining path and the second machining path (for drawing). It is recommended to display the two paths in different ways of displaying by a technique such as drawing in different colors, drawing in different line widths, or blinking.
  • an optional skip "/" may be added to a circular hole drawing and machining command (M98P200) as in Fig. 2D .
  • the optional skip is turned off (M98P200 is executed) when drawing is performed, and is turned on (M98P200 is not executed) otherwise.
  • Fig. 6A is a flowchart showing a process for machining path generation in keyway cutting process. Each step in the flowchart will now be described as follows.
  • Step sa01 An operator inputs data on keyway width, keyway depth, and chamfer.
  • Step sa02 The operator inputs hole diameter and center coordinates.
  • Step sa03 The operator presses the program creation button.
  • the machining path generator determines whether or not the program creation button has been pressed. If the button has been pressed (YES), the machining path generator goes to step sa04. If the button has not been pressed (NO), the machining path generator waits for the button to be pressed.
  • Step sa04 Input data on keyway width, keyway depth, chamfer, hole diameter, and center coordinates are acquired.
  • Step sa05 A machining path for keyway cutting is generated.
  • Step sa06 Input data on hole diameter and center coordinates are acquired.
  • Step sa07 A machining path corresponding to the circular hole is generated, and the process is ended.
  • Fig. 6B is a flowchart showing the processing of a machining path (NC program) upon performing a drawing and machining operation in keyway cutting. Each step in the flowchart will now be described as follows.
  • Step sb01 A determination is made as to whether or not the macro variable #3010 is -1 (minus 1). If the macro variable #3010 is -1 (minus 1) (YES), the process goes to step sb02. If the macro variable #3010 is not -1 (minus 1) (NO), the process goes to step sb03.
  • Step sb02 The machining path corresponding to the circular hole is executed.
  • Step sb03 The machining path for the keyway is executed, and the process is ended.
  • a machining path generator is installed on a numerical controller mounted on a wire electrical discharge machine.
  • the machining path generator generates a slit cutting program based on data inputted through the display/keyboard 12.
  • Fig. 5 is a schematic diagram of a numerical controller mounted on a wire electrical discharge machine.
  • Data slit depth
  • data rectangular hole vertical and horizontal lengths
  • data rectangular hole center coordinates
  • a machining reference position designation unit which are inputted through the display/keyboard 12 are stored in the storage 15 or the SRAM 14.
  • the machining path generator (software for generating a machining path) is registered on the storage 15 and, after the numerical controller 10 is turned on, copied to the RAM 13 to be executed using the CPU 11.
  • the generated machining path (NC program) is stored in the storage 15 or the SRAM 14.
  • the CPU 11 analyzes the NC program and displays the machining path on a display of the display/keyboard 12. Moreover, when the generated machining path (NC program) is executed, the CPU 11 analyzes the machining program and issues commands to a discharger 16, a servo motor 17, and a machining fluid pump 18. The discharger 16, the servo motor 17, and the machining fluid pump 18 operate based on the commands, and the wire electrical discharge machine moves a discharging wire with ejecting machining fluid to machine an object to be machined.
  • Fig. 7 shows one example of an input screen of a machining path generator for generating a machining path for slit cutting in the numerical controller.
  • Reference numeral 50 denotes an input box for the depth of a slit (c)
  • reference numeral 51 denotes an input box for the length of a width (w)
  • reference numeral 52 denotes an input box for a vertical length (1)
  • reference numeral 53 denotes input boxes for center coordinates (x, y).
  • NC program When data are inputted and a program creation button 54 is pressed, a machining path (NC program) is generated. When the generated machining path (NC program) is drawn, a figure of the machining path such as shown in Fig. 8 is displayed.
  • Reference numeral 62 denotes a rectangular hole, and reference numeral 60 denotes a slit. A detailed description will be made below.
  • the operator inputs "slit (c)" on the screen in order to designate a slit depth.
  • "horizontal length (w)” and “vertical length (l)” of the rectangular hole are inputted in order to designate a shape of an object to be machined.
  • the object to be machined is thus defined as a workpiece having a rectangular hole formed therethrough, and slits are adapted to be cut from four corners of the rectangular hole. Accordingly, it is only necessary to input vertical and horizontal dimensions of the rectangular hole as minimal data on the shape of the object to be machined (data on the external shape of the workpiece have no relation with a machining path and need not be inputted).
  • NC program machining path
  • the machining path generation unit 1 acquires all data inputted through the screen such as data (slit) in the machining shape definition unit, data (vertical length and horizontal length) in the workpiece shape definition unit, and data (rectangular hole center coordinates) in the machining reference position designation unit. Based on the acquired data, a machining path (NC program) for slit cutting such as shown in Fig. 9A is generated. Then, the machining path generation unit 2 acquires data (vertical length and horizontal length) in the workpiece shape definition unit and data (rectangular hole center coordinates) in the machining reference position designation unit. These data had already been inputted through the screen. Based on the acquired data, a machining path (NC program) such as shown in Fig.
  • machining path generation unit 1 or 2 when the program creation button is pressed, or may be prepared on the storage 15 or the SRAM 14 in advance.
  • the numerical controller 10 assigns -1 to the macro variable #3010.
  • Fig. 10A is a flowchart showing a process for machining path generation in slit cutting.
  • Step sc01 An operator inputs data on horizontal length, vertical length, and slit.
  • Step sc03 The operator presses the program creation button.
  • the machining path generator confirms whether or not the program creation button has been pressed. If the button has been pressed (YES), the machining path generator goes to step sc04. If the button has not been pressed (NO), the machining path generator waits for the button to be pressed.
  • Step sc04 Input data on horizontal length, vertical length, slit, and center coordinates are acquired.
  • Step sc05 A machining path for slit cutting is generated.
  • Step sc06 Input data on horizontal length, vertical length, and center coordinates are acquired.
  • Step sc07 A machining path corresponding to the rectangular hole is generated, and the process is ended.
  • Fig. 10B is a flowchart showing the processing of a machining path (NC program) upon performing a drawing and machining operation in slit cutting.
  • Step sd01 A determination is made as to whether or not the macro variable #3010 is -1 (minus 1). If the macro variable #3010 is -1 (minus 1) (YES), the process goes to step sd02. If the macro variable #3010 is not -1 (minus 1) (NO), the process goes to step sd03.
  • Step sd02 The machining path corresponding to the rectangular hole is executed.
  • Step sd03 The machining path for the slits is executed, and the process is ended.
  • Fig. 11 is a block diagram of a machining program creation apparatus of an embodiment of the above-described present invention.
  • the machining path drawing unit 6 draws the first machining path and the second machining path on the same screen.
  • the machining path drawing unit 6 draws the first machining path and the second machining path on the same screen.
  • machining path generator As described above, by using the machining path generator according to the present invention, an operator can visually check the machining position of a machining shape (for example, in example 1, where the keyway is machined in the circular hole of the object to be machined). Accordingly, whether or not a machining path (NC program) generated is correct can be easily and simply checked. Thus, incorrect machining can be prevented in advance.
  • NC program machining path

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • General Physics & Mathematics (AREA)
  • Electrochemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Human Computer Interaction (AREA)
  • Geometry (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Numerical Control (AREA)
EP16185218.1A 2015-09-03 2016-08-22 Appareil de création de programme d'usinage pour machine d'electroerosion par fil Active EP3139232B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2015173984A JP6484148B2 (ja) 2015-09-03 2015-09-03 ワイヤ放電加工機の加工プログラム作成装置

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EP3139232A1 true EP3139232A1 (fr) 2017-03-08
EP3139232B1 EP3139232B1 (fr) 2020-07-08

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US (1) US10082781B2 (fr)
EP (1) EP3139232B1 (fr)
JP (1) JP6484148B2 (fr)
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CN (1) CN106502200B (fr)

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JP5873138B2 (ja) * 2014-06-24 2016-03-01 ファナック株式会社 ワイヤ放電加工機用のキー溝加工用加工プログラム作成装置
GB2573168B (en) * 2018-04-27 2022-09-21 Tek 4 Ltd Micro machining

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EP2889100A2 (fr) * 2013-12-26 2015-07-01 Fanuc Corporation Machine à décharge électrique à fil et appareil de génération de passage d'usinage pour une telle machine

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JP3071758B2 (ja) * 1998-05-20 2000-07-31 ヤマザキマザック株式会社 ３次元レーザ加工機及び３次元レーザ加工機における加工プログラムの作成制御方法
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US4530046A (en) * 1982-03-23 1985-07-16 Toyoda Koki Kabushiki Kaisha Method of inputting machining information to a machine tool numerical controller and apparatus therefor
EP2889100A2 (fr) * 2013-12-26 2015-07-01 Fanuc Corporation Machine à décharge électrique à fil et appareil de génération de passage d'usinage pour une telle machine
JP2015123537A (ja) 2013-12-26 2015-07-06 ファナック株式会社 ワイヤ放電加工機用のキー溝加工用加工経路生成装置

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KR20170028274A (ko) 2017-03-13
EP3139232B1 (fr) 2020-07-08
US10082781B2 (en) 2018-09-25
JP2017047515A (ja) 2017-03-09
US20170068231A1 (en) 2017-03-09
JP6484148B2 (ja) 2019-03-13
CN106502200A (zh) 2017-03-15
KR102056610B1 (ko) 2019-12-17
CN106502200B (zh) 2021-05-25

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